Bi-color tourmaline is a fascinating gemstone that showcases two distinct colors within a single crystal. This unique characteristic is due to the varying concentrations of trace elements during the crystal's formation. Common color combinations include shades like pink and green, blue and green, or even yellow and pink.

The beauty of bi-color tourmaline lies in its ability to display a gradient or sharp division between the two colors, often creating a striking visual effect.

In terms of rarity, bi-color tourmaline is less common than single-colored varieties, especially when the colors are well-defined and vibrant.

Metaphysically, it is believed to combine the properties of both colors, promoting balance and harmony while enhancing creativity and emotional healing. This makes bi-color tourmaline a popular choice for those seeking both aesthetic beauty and spiritual significance in their gemstones.